This book also contains a number of advanced EJB topics, giving you a practical and real world understanding of the subject.By reading this book, you will acquire a deep understanding of EJB.

• 现在它们之间需要做若干个接口，实现系统间数据的实时访问、业务逻辑的相互调用等，请提出一个简单可行的方案，并简要说明您的方案的优势。